I just put a new center pipe on my car and now I've got some vibration at 40 and 60mph. It's a 97 accord, non-ca emissions. The original center pipe had the flex pipe in front of the resonator, about 8" from the cat flange. The new walker pipe has it behind the resonator. I suspect this is causing the problem. I've had the car since new so I know the center pipe was factory installed but honda dealerships are telling me they don't have a pipe with the flex in front of the resonator for that model. Does anyone have a 97 2 door with the flex in front? I'll get a flex section from jc whitney to get rid of the vibration but I just want to know what's up with all the confusion about the pipe configeration. thanks